True Genius: Cathedral DoorThe True Genius line brings together brainteaser puzzles and links each design with an ancient civilization including China, Aztec, Rome, Greece and Egypt. Keep the ornate arch from crumbling by finding the solution to this puzzle. Remove all the intricately designed pieces, then find the way to get them all back into place. More difficult than you'd think! Features: Wooden Brainteaser Puzzle. Remove the pieces from the frame and fit them into their